TY - JOUR
T1 - Field-swept magnetic particle spectroscopy using a transverse DC field
AU - Liu, Yanjun
AU - Feng, Xin
AU - Zhang, Haoran
AU - Liu, Sijia
AU - Li, Guanghui
AU - An, Yu
AU - Hui, Hui
AU - Tian, Jie
N1 - Publisher Copyright:
© 2023 Liu et al.; licensee Infinite Science Publishing GmbH © 2023 Infinite Science Publishing.
PY - 2023
Y1 - 2023
N2 - The transverse magnetization of magnetic nanoparticles (MNPs) induced by a DC field perpendicular to the AC field is of increasing interest in magnetic particle imaging (MPI) and magnetic particle spectroscopy (MPS). It can be used to improve the image quality in MPI and to enhance the sensitivity of MPS without direct feedthrough interference. In this work, we developed a field-swept MPS to observe the response curve of the transverse magnetization by varying the transverse DC field amplitude, and reported a new metric to characterize the nonlinear properties of MNPs, called DCM (the DC field amplitude at the maximum harmonic amplitude). Two commercial MNPs (synomag®-70 and synomag®-50) were investigated. The experimental results show that the DCM is different for the two MNPs and independent of the concentration of MNPs. In addition, the DCM was positively correlated with the viscosity of the sample solvent, which further indicates a correlation with Brownian relaxation.
AB - The transverse magnetization of magnetic nanoparticles (MNPs) induced by a DC field perpendicular to the AC field is of increasing interest in magnetic particle imaging (MPI) and magnetic particle spectroscopy (MPS). It can be used to improve the image quality in MPI and to enhance the sensitivity of MPS without direct feedthrough interference. In this work, we developed a field-swept MPS to observe the response curve of the transverse magnetization by varying the transverse DC field amplitude, and reported a new metric to characterize the nonlinear properties of MNPs, called DCM (the DC field amplitude at the maximum harmonic amplitude). Two commercial MNPs (synomag®-70 and synomag®-50) were investigated. The experimental results show that the DCM is different for the two MNPs and independent of the concentration of MNPs. In addition, the DCM was positively correlated with the viscosity of the sample solvent, which further indicates a correlation with Brownian relaxation.
UR - https://www.scopus.com/pages/publications/85151498870
U2 - 10.18416/IJMPI.2023.2303047
DO - 10.18416/IJMPI.2023.2303047
M3 - 文章
AN - SCOPUS:85151498870
SN - 2365-9033
VL - 9
JO - International Journal on Magnetic Particle Imaging
JF - International Journal on Magnetic Particle Imaging
M1 - 2303047
ER -